This version (18 May 2021 09:03) was approved by John Joseph.The Previously approved version (05 Feb 2020 09:50) is available.
Table of Contents
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Text-In Eq
Description
The Text-In Eq block gives access to a wide variety of 2nd-order (biquad)filter algorithms.
The available filter types are:
- Low shelf filter
- High shelf filter
- Parametric filter
- Peaking filter
- First order low shelf filter
- First order high shelf filter
- Low pass filter
- High pass filter
- Notch filter
- Band stop filter
- Band pass filter
- All pass filter
Usage
To open the filter control window, click on the icon button. Select the desired filter type from the drop-down combo-box list. The filter controls and the icon button image will change to reflect the selected filter type.
Targets Supported
| Name | ADSP-214xx | ADSP-215xx/SC5xx | ADAU145x/146x |
|---|---|---|---|
| ————————————-- | ——————-- | ——————————-- | —————————- |
| Text-In Eq | B/S | B/S | S |
| Text-In Eq Slew | NA | NA | S |
| Text-In Eq Slew Ext | NA | NA | S |
Pins
Input
| Name | Type | Description |
|---|---|---|
| ——————————————— | —————————— | ———————————————— |
| Input0 | Audio | Input Channel 0 |
| Lambda0 (For Slew Ext Only) | Control | External Slew Input for Stage 0 |
Output
| Name | Type | Description |
|---|---|---|
| —————————————— | —————————— | ———————————————— |
| Output0 | Audio | Output channel 0 |
Configurable Parameters
| GUI Parameter Name | Default Value | Range | Function Description |
|---|---|---|---|
| ———————————————————- | ————————— | ——————————————— | ———————————————————- |
| StageX_Boost | 0 dB | -10 to +10 dB | Set the boost value for a particular filter curve |
| StageX_Frequency | 1000 | 0 to 96000Hz | Cut-off frequency |
| StageX_Gain | 0 dB | -15 to +15 dB | Filter Gain |
| StageX_Q | 1.41 | 0.1 to 16 | Q factor of the filter |
| StageX_FilterType | Parametric filter | Available filter Types | Controls the type of the filter |
| StageX_EnabledOrBypassed | True | True/False | Enabled/Disabled the algorithm |
| StageX_Phase | False | True/False | Controls the phase of coefficients in 0 degree or 180 degree phase |
| StageX_Slew (For Slew Variant ADAU145x/146x Only) | 0 | 0 to 1 | SW slew value for individual filter stages applicable only for Text-in EQ Slew Variant |
| NumStages | 1 | 1 to 20 | Number of stages of filter. Change in this value requires re-compilation |
| NumChannels | 1 | 1 to 20 | Number of input and output channels. Change in this value requires re-compilation |
| SlewType (For Slew Variant ADAU145x/146x Only) | HWSlew | HW/SW Slew | SLew type for the filter HW/SW |
| CustomSlew (For Slew Variant ADAU145x/146x Only) | 0x208A | 0x0 to 0xFFFF | Custom slew value entered by user |
Here, * X - Indicates Stage Number
DSP Parameters
| Parameter Name | Description | ADSP-214xx/SC5xx/215xx | ADAU145x/146x |
|---|---|---|---|
| ———————————— | ————————————————————————————— | —————————————- | —————————- |
| StageX_B0 | B0 Filter Coefficient | Float | FixPoint8d24 |
| StageX_B1 | B1 Filter Coefficient | Float | FixPoint8d24 |
| StageX_B2 | B2 Filter Coefficient | Float | FixPoint8d24 |
| StageX_A1 | A1 Filter Coefficient | Float | FixPoint8d24 |
| StageX_A2 | A2 Filter Coefficient | Float | FixPoint8d24 |
| slew_mode | Slew value for medium size eq slew variant only | NA | Integer32 |
| StageX_Lambda | Exponential decay value of filter stage X for SW slew type only | NA | FixPoint8d24 |
Here,
- X - Stage Number (Changes for each stage coefficients)
resources/tools-software/sigmastudiov2/modules/filters/textineq.txt · Last modified: 15 May 2021 08:47 by Sreesha Y M